Delivered 35 weeks due to bp 170/110 - 7 days postpartum double vision started (nerve palsy left eye). normal mri and mrv. elevated sed rate on blood work, all else normal. day 18 of double vision. what is the cause??

Double vision (diplopia) caused by nerve palsies affect cranial nerves (CN) 3, 4, or 6. Palsy of Third CN causes both vertical/horizonal diplopia, Fourth CN is vertical, and sixth CN is horizontal (worse at distance). Normal imaging is reassuring, however a neurologist or ophthalmologist should assess the cause. It is also important to maintain a normal blood pressure after of pre-eclampia